*
{
    margin: 0;
    padding: 0;

    text-decoration: none;
}
body
{
    padding: 20px;
}
#container
{
    position: relative;

    overflow: hidden;

    width: 600px;
    height: 400px;

    border: 3px solid #333;
    margin: 0 auto;
}
#list
{
    position: absolute;
    z-index: 1;

    width: 4200px;
    height: 400px;
}
#list img
{
    float: left;

    width: 600px;
    height:350px;
    cursor: pointer;
}
#buttons
{
    position: absolute;
    z-index: 2;
    bottom: 20px;
    left: 250px;

    width: 100px;
    height: 10px;
}
#buttons span
{
    float: left;

    width: 10px;
    height: 10px;
    margin-right: 5px;

    cursor: pointer;

    border: 1px solid #fff;
    border-radius: 50%;
    background: #333;
}
#buttons .on
{
    background: orangered;
}
.arrow
{
    font-weight: bold;
    line-height: 39px;

    position: absolute;
    z-index: 2;
    top: 180px;

    display: none;

    width: 40px;
    height: 40px;

    cursor: pointer;
    text-align: center;

    color: #fff;
    background-color: RGBA(0,0,0,.3);
}
.arrow:hover
{
    background-color: RGBA(0,0,0,.7);
}
#container:hover .arrow
{
    display: block;
}
#prev
{
    left: 20px;
}
#next
{
    right: 20px;
}
